Throwing my build log into the pile:
Note on the failed launches - the maiden pilots were all existing Mini Drak pilots that inspected the setup before the maiden attempts (I had a range of setups over 6 builds). The problem we ran into was a problem with how iNav interprets radio trims which took a lot of work to figure out. Once we worked out that wrinkle - the bird flew exactly the way she meant to.
Post maiden report coming soon along with my trimmed configurations and notes on how to set up iNav for RTH with this bird.